Chelsea Manning, who is currently serving a 35-year prison term for leaking hundreds of thousands of classified files about the war in Iraq, is reportedly facing indefinite solitary confinement for, among other things, possessing the July issue of Vanity Fair, which features Caitlyn Jenner on the cover.

The online petition site Fight for the Future, which launched a campaign asking the United States Disciplinary Barracks at Ft. Leavenworth, Kansas to open Manning’s hearing in the matter to the public, says that the former intelligence analyst said she had recently been written up with four disciplinary charges. The alleged violations included disrespect (in which she “conducted [herself] in a contemptuous manner” towards a corrections specialist), disorderly conduct (“you were observed . . . sweeping food onto the floor”), and “improper medicine use” (she possessed a tube of toothpaste that had expired on April 9).

A fourth charge includes the possession of “prohibited property,” specified as “books and magazines.” The list, according to Fight for the Future, contained materials that highlight transgender issues, alongside documents about the government’s use of torture, and other materials:

Vanity Fair issue with Caitlyn Jenner on the cover, Advocate, OUT Magazine, Cosmopolitan issue with an interview of Chelsea, Transgender Studies Quarterly, novel about trans issues "A Safe Girl to Love," book "Hacker, Hoaxer, Whistleblower, Spy -- The Many Faces of Anonymous," book "I Am Malala," 5 books by Robert Dorkin, legal documents including the Senate Torture Report, book: "Hidden Qualities that Make Us Influential."

According to the charge document, which public-relations consultant Christina DiPasquale told VF.com Manning read over the phone to her, the maximum punishment for these charges is “indefinite solitary confinement.” The Army has not confirmed the charges at this time. We've reached out to the prison to Fort Leavenworth officials, and will update this post as necessary.

Manning, formerly known as Bradley, has been a high-profile activist for transgender rights. She began her own transition in 2013.

“This kind of action has the potential to chill Chelsea’s speech and silence her altogether,” the A.C.L.U.’s Chase Strangio, one of Manning’s attorneys in her civil case against the Defense Department, wrote to VF.com. “We are hopeful that the prison will respond by dismissing these charges and ensuring that she is not unfairly targeted based on her activism, her identity, or her pending lawsuit.”

Strangio also told BuzzFeed News that the charges against Manning would put her “at risk of losing various support networks simply because she had an expired tube of toothpaste, the Vanity Fair magazine that featured Caitlyn Jenner and requested a lawyer when she felt she was being accused of misconduct.”

In recent years, solitary confinement has been the subject of harsh criticism, with more and more research indicating that prolonged isolation is so psychologically damaging that it could be classified as torture.